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Fencer Vulns
medium 6.5

CVE-2021-32256 json

An issue was discovered in GNU libiberty, as distributed in GNU Binutils 2.36.

published 2023-07-18 3 y ago modified 2026-06-17 4 mo ago also EUVD-2021-19111

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

An issue was discovered in GNU libiberty, as distributed in GNU Binutils 2.36. It is a stack-overflow issue in demangle_type in rust-demangle.c.

Patch / fix

  • binutils SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES for SAP 15 SP1 +18 more 2.41-150100.7.46.1
  • cross-rx-binutils openSUSE Leap 15.5 2.41-150100.7.46.1
  • cross-arm-binutils openSUSE Leap 15.5 2.41-150100.7.46.1
  • cross-avr-binutils openSUSE Leap 15.5 2.41-150100.7.46.1
  • cross-ppc-binutils openSUSE Leap 15.5 2.41-150100.7.46.1
  • cross-spu-binutils openSUSE Leap 15.5 2.41-150100.7.46.1
  • cross-hppa-binutils openSUSE Leap 15.5 2.41-150100.7.46.1
  • cross-i386-binutils openSUSE Leap 15.5 2.41-150100.7.46.1

suse advisories SUSE-SU-2023:3825-1SUSE-SU-2023:3695-1

  • binutils openSUSE Tumbleweed 2.41-1.2

opensuse advisories openSUSE-SU-2024:13411-1

  • gcc CBL-Mariner 2.0 11.2.0-9
  • gdb CBL-Mariner 2.0 11.2-10

azure linux advisories AZL-27632AZL-27633

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-32256 updated cvss 0.0

binutils: stack-overflow issue in demangle_type in rust-demangle.c.

  • Red Hat Enterprise Linux 6 binutils Red Hat Enterprise Linux 7 gdb, binutils, gdb-gdbserver
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 mingw-binutils, mingw32-binutils, mingw64-binutils, gcc-toolset-13-gdb, mingw-binutils-generic Red Hat Enterprise Linux 9 binutils, binutils-gold, gcc-toolset-12-gdb, gcc-toolset-13-gdb, gcc-toolset-12-binutils, gcc-toolset-12-binutils-gold
    affected: no fix available, no fix planned “Will not fix”
  • Red Hat Enterprise Linux 8 gdb, binutils, gdb-headless, gdb-gdbserver, gcc-toolset-11-gdb, gcc-toolset-12-gdb, +6 more Red Hat Enterprise Linux 9 gdb, gdb-minimal, gdb-headless, gdb-gdbserver, gcc-toolset-13-binutils, gcc-toolset-13-binutils-gold
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugs.launchpad.net https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1927070 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.